fix #976: only process drag and drop items of kind file for chrome
fix #976: only process drag and drop items of kind file for chrome

uQr/kudu,barnyp/kudu,sitereactor/kudu,duncansmart/kudu,shibayan/kudu,EricSten-MSFT/kudu,shibayan/kudu,chrisrpatterson/kudu,EricSten-MSFT/kudu,bbauya/kudu,barnyp/kudu,projectkudu/kudu,YOTOV-LIMITED/kudu,YOTOV-LIMITED/kudu,sitereactor/kudu,YOTOV-LIMITED/kudu,uQr/kudu,chrisrpatterson/kudu,projectkudu/kudu,dev-enthusiast/kudu,puneet-gupta/kudu,shibayan/kudu,bbauya/kudu,juoni/kudu,juoni/kudu,EricSten-MSFT/kudu,YOTOV-LIMITED/kudu,shrimpy/kudu,bbauya/kudu,sitereactor/kudu,dev-enthusiast/kudu,juvchan/kudu,shrimpy/kudu,kenegozi/kudu,mauricionr/kudu,shrimpy/kudu,kenegozi/kudu,juoni/kudu,uQr/kudu,shibayan/kudu,projectkudu/kudu,oliver-feng/kudu,juoni/kudu,barnyp/kudu,puneet-gupta/kudu,kali786516/kudu,MavenRain/kudu,juvchan/kudu,dev-enthusiast/kudu,badescuga/kudu,juvchan/kudu,chrisrpatterson/kudu,dev-enthusiast/kudu,MavenRain/kudu,EricSten-MSFT/kudu,duncansmart/kudu,puneet-gupta/kudu,juvchan/kudu,oliver-feng/kudu,mauricionr/kudu,projectkudu/kudu,EricSten-MSFT/kudu,juvchan/kudu,bbauya/kudu,shibayan/kudu,puneet-gupta/kudu,oliver-feng/kudu,kenegozi/kudu,kali786516/kudu,uQr/kudu,MavenRain/kudu,kali786516/kudu,badescuga/kudu,kenegozi/kudu,MavenRain/kudu,barnyp/kudu,sitereactor/kudu,kali786516/kudu,duncansmart/kudu,badescuga/kudu,oliver-feng/kudu,shrimpy/kudu,mauricionr/kudu,chrisrpatterson/kudu,duncansmart/kudu,puneet-gupta/kudu,badescuga/kudu,projectkudu/kudu,sitereactor/kudu,badescuga/kudu,mauricionr/kudu